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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  Analog/digital ground question 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Analog/digital ground question  (Read 1617 times)
DaveTV
Posts: 165

Dave S


Analog/digital ground question
« on: September 03, 2003, 07:35:51 PM »

I'm planning on building Scott Swartz' PT-80 digital delay, and I noticed the analog and digital ground symbols on the schematic. This is my first digital pedal, and I was wondering if anyone had any advice on how to wire these two ground types.
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Rob Strand
Posts: 572


Analog/digital ground question
« Reply #1 on: September 03, 2003, 11:30:00 PM »

You keep the digital ground stuff separate from the analogue ground stuff and then connect the two gounds together at one point.  Think of the two ground systems as islands which meet at one point.  The last thing you want is the analog ground connections interwoven with the digital ground connections.
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Paul Perry (Frostwave)
Posts: 7470

Paul P.


Analog/digital ground question
« Reply #2 on: September 04, 2003, 03:17:00 AM »

And you would want to keep the analog and digital + upplies separate a well, and connect right at the regulator (or whtevre the power source is).
The idea is to have no power or ground currents flowing in common traces.
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